6th Generation Golden Single Water 75G + Pressure Barrel 6th Generation Golden Single Water 100G + Pressure Barrel 6th Generation Golden 100G Double Water + Pressure Barrel 6th Generation Golden 100G Self-Priming + Pressure Barrel 6th Generation Gold 75G Single Water Pressurization (Huitong) + Barrel 6th Generation Gold 100G Single Water Pressurization (Huitong) + Barrel 6th Generation Gold 100G Double Water Boosting (Huitong) + Barrel 6th Generation Gold 100G Single Water Self-Priming (Huitong) + Barrel (Upgrade 2